Passing a value from a lotus notes agent back to javascript

HCL Domino Domino Forum
1

Hi

I have a web application. On the webpage I have u button that starts a javascript code. In the javascriptcode an lotusnotesagent is triggered. In the agent a document is searched and a value of a field is captured in a variable. How do I pass this value back into javascript?

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Subject: Passing a value from a lotus notes agent back to javascript

Create a hidden field that the agent can dump the value into and then javascript can pull the value from that?

3

Subject: RE: Passing a value from a lotus notes agent back to javascript

Don’t I have to refresh th ewebpage or reopen it in order for javascript to see the field with the new data?

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Subject: Passing a value from a lotus notes agent back to javascript - you need AJAX

what you need to do is use AJAX!

Below is a very basic explanation of AJAX and Notes and then some sample code. Essentially you have an event which triggers some code in the JS header. This code then sends a URL back to notes with a variable attached to the end of the URL. Your lotusscript agent is then set in motion and uses the variable to do what you want. It then uses the print command to send a string back to the browser. More code in the JSHeader then ‘decodes’ whatever you have sent back and writes it to fields or whatever you want.

Cheers

Paul

1 - It starts with the onChange event of the something in the browser that then starts the callServer code.

callServer(this field name, this field selected option)

2 - This uses the callServer function in the JSHeader

// function to call the server

function callServer(fieldName,fieldValue)

{

// Build the URL to connect to

var url = “/xyz/xyzdir.nsf/Aagentname?OpenAgent&datastart=fieldname=” + fieldName + “fieldvalue=” + fieldValue + “dataend”;

// Open a connection to the server

xmlHttp.open(“GET”, url, true);

// Setup a function for the server to run when it’s done

xmlHttp.onreadystatechange = updatePage;

// Send the request

xmlHttp.send(null);

}

(which in turn uses the piece of code in the JSHeader)

// code to create the connection to the server, IE browsers only, errors on fail

var xmlHttp = false;

try

{

xmlHttp = new ActiveXObject("Msxml2.XMLHTTP");

}

catch (e) 

{

	try 

	{

	xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");

	}

	catch (e2)

	{

	xmlHttp = false;

}

}

if (!xmlHttp)

{

alert(“Your Browser doesn’t meet IT requirements, please contact your local IT rep.”);

}

3 - This calls the LotusScript agent that does the donkey work and then prints the information back to the browser.

The start of your agent needs to be:

Sub Initialize

’ setup the session, get the document and return string variable

Dim session As New NotesSession

Dim strReturnResults As String	

Dim doc As NotesDocument

Set doc = session.DocumentContext

and then the end of your agent needs to be:

’ write the results to the return string

strReturnResults =  "datastart=" + ":fn:" + secondaryField + ":no:" + Trim(Str(secondaryVC.Count-secondaryDuplicates)) + ":fv:" + secondaryList + ":fn:" + tertiaryField + ":no:" + Trim(Str(tertiaryVcCount-tertiaryDuplicates)) + ":fv:" + tertiaryList + "dataend"

Print strReturnResults

End Sub

4 - The returning information is dealt with in the JSHeader

// function to deal with the results

function updatePage()

{

if (xmlHttp.readyState == 4) 

{

var response = xmlHttp.responseText;

}

}

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Subject: RE: Passing a value from a lotus notes agent back to javascript - you need AJAX

Hi

Thank you very much for the explanation. It help perfectly!!!

Kind Regards